[    2.027790] ip (240) used greatest stack depth: 12376 bytes left
[    2.751255] ip (274) used greatest stack depth: 12344 bytes left
[   25.943474] ip (2459) used greatest stack depth: 12328 bytes left
[  770.456865] blackhole_netdev_xmit(): Dropping skb.
[  770.456926] blackhole_netdev_xmit(): Dropping skb.
[  770.456960] blackhole_netdev_xmit(): Dropping skb.
[  770.456996] blackhole_netdev_xmit(): Dropping skb.
[  771.214292] blackhole_netdev_xmit(): Dropping skb.
[  771.214344] blackhole_netdev_xmit(): Dropping skb.
[  771.214375] blackhole_netdev_xmit(): Dropping skb.
[  771.214406] blackhole_netdev_xmit(): Dropping skb.
[  773.840166] blackhole_netdev_xmit(): Dropping skb.
[  773.840217] blackhole_netdev_xmit(): Dropping skb.
[  827.961795] net_ratelimit: 2 callbacks suppressed
[  827.961806] blackhole_netdev_xmit(): Dropping skb.
[  827.961896] blackhole_netdev_xmit(): Dropping skb.
[  827.961937] blackhole_netdev_xmit(): Dropping skb.
[  827.961985] blackhole_netdev_xmit(): Dropping skb.
[  831.676959] blackhole_netdev_xmit(): Dropping skb.
[  831.677009] blackhole_netdev_xmit(): Dropping skb.
[  831.677038] blackhole_netdev_xmit(): Dropping skb.
[  831.677069] blackhole_netdev_xmit(): Dropping skb.
[  839.919339] blackhole_netdev_xmit(): Dropping skb.
[  839.919389] blackhole_netdev_xmit(): Dropping skb.
[  839.919418] blackhole_netdev_xmit(): Dropping skb.
[  839.919455] blackhole_netdev_xmit(): Dropping skb.
[  961.184804] blackhole_netdev_xmit(): Dropping skb.
[  961.184882] blackhole_netdev_xmit(): Dropping skb.
[  961.184921] blackhole_netdev_xmit(): Dropping skb.
[  961.184954] blackhole_netdev_xmit(): Dropping skb.
[ 1106.164411] blackhole_netdev_xmit(): Dropping skb.
[ 1106.164487] blackhole_netdev_xmit(): Dropping skb.
[ 1106.164531] blackhole_netdev_xmit(): Dropping skb.
[ 1106.164575] blackhole_netdev_xmit(): Dropping skb.